## Summary
- Pass `--light` to `workspace:seed:dev` in the preview env keepalive
workflow so only the Apple workspace is created
- Avoids `Empty4` being picked as the default workspace at sign-in
(which has no users), making the prefilled `[email protected]` credentials
land on a useful workspace
## Why
`workspace:seed:dev` (no flag) seeds Apple + YCombinator + Empty3 +
Empty4. Preview envs run in single-workspace mode
(`IS_MULTIWORKSPACE_ENABLED=false`), so
[`WorkspaceDomainsService.getDefaultWorkspace`](https://github.com/twentyhq/twenty/blob/main/packages/twenty-server/src/engine/core-modules/domain/workspace-domains/services/workspace-domains.service.ts)
returns the most recently created workspace — Empty4 — which has no
users. Users hitting the preview URL therefore see "Welcome, Empty4."
and can't sign in. Same failure mode #19822 fixed for `twenty-app-dev`.
## Test plan
- [ ] Trigger the `preview-app` label on a PR and confirm the preview
URL signs in to the Apple workspace, not Empty4
- [ ] Confirm the seed step still passes (no `Empty3`/`Empty4`
references break it)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-authored-by: Claude Opus 4.7 <[email protected]>
